What is the product 7(-6 1/8)?? Fast please <3
1 answer:
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Answer:
If the expression is , then the answer is the first option.
If the expression is , then the answer is the third option.
Step-by-step explanation:
Remember that when you have a radical expression in the form , you can rewrite as:
Then:
- If the expression is , then you can rewrite it in the following radical form:
(This form matches with the first option.)
- If the expression is , then you can rewrite it in the following radical form:
(This form matches with the third option).
Answer:
The speed in of the plane is 115.47 m/sec
Step-by-step explanation:
Given:
Height at which the plane is flying = 6000 m
Angle of elevation at the radar base = 30 Degrees
Angle of elevation at the radar base after one minute = 60 Degrees
To Find:
The Speed of the plane in meter per second = ?
Solution:
Let us use the tangent of the angle to find the distance (d) to a point directly below plane:
<u>when the angle is 30 degrees</u>
d1 = 10392.3 meters
<u>when the angle is 60 degrees</u>
d2 = 3464.1 meters
<u>distance travelled by aircraft in 1 min is </u>
=>d1 - d2
=>0392.3 - 3464.1
= 6928.2 m/min
<u>Now converting to m/sec</u>
=>
=>115.47 m/sec